CN205380496U - Lead screw pre -stretching structure - Google Patents
Lead screw pre -stretching structure Download PDFInfo
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- CN205380496U CN205380496U CN201620042322.7U CN201620042322U CN205380496U CN 205380496 U CN205380496 U CN 205380496U CN 201620042322 U CN201620042322 U CN 201620042322U CN 205380496 U CN205380496 U CN 205380496U
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- screw mandrel
- bearing
- lead screw
- support assembly
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Abstract
The utility model provides a lead screw pre -stretching structure, including behind support assembly, lead screw support assembly before the motor, motor cabinet, shaft coupling, lead screw, lead screw, lead screw horizontal installation is before the lead screw behind support assembly and the lead screw between the support assembly, and motor horizontal installation is on the motor cabinet, and motor output shaft and lead screw axle pass through the coupling joint, wherein behind the lead screw support assembly including adjustment pad, bearing frame, spacer, bearing front end housing, lock nut, bearing, in middle spacer, the outer spacer in centre, bearing rear end cap. The utility model discloses simple structure, the installation is convenient with the adjustment, and the maintenance frequency is few, and the lead screw can be eliminated because of the influence of temperature rise extension to the precision to its pre -stretching effect to the precision and the reliability of improvement lead screw, the rigidity and the heat stability of assurance lead screw.
Description
Technical field:
This utility model relates to Digit Control Machine Tool parts and drives field, particularly relates to a kind of screw mandrel prestretched structure.
Background technology:
In recent years, numerical control machine tool capability is had higher requirement by manufacturing development, and screw rod transmission precision on machine tooling time the amount of feeding, positioning precision have important impact.Because of frictional heat in transmission process, screw mandrel produces elongation phenomenon in the axial direction, causes that machine tool drive and positioning precision reduce.For improving rigidity and the heat stability of screw mandrel, usually screw mandrel is carried out prestretched process, existing screw mandrel prestressing mechanism many employings screw mandrel bearing one end is fixed, the other end adopts locking nut locking, making screw mandrel be in pretensioned state, this structure needs to leave certain gap between the shaft shoulder of screw mandrel and the inner ring of bearing, and bearing internal external circle unbalance stress, easily make bearing wear, reduce screw mandrel rigidity；Part is had to adopt double nut locking, namely after screw mandrel bearing one end fixes, a locking nut is adopted to be strained by screw mandrel outside bearing block, re-use another nut to fasten inside bearing block, although such structure can realize the pretension stretching action of screw mandrel, but come and go for a long time because of screw mandrel and drive, easily cause nut loosening, thus reducing pretensioning effect, and needing during mounting and adjusting to adjust two nuts, not easily operating.
Utility model content:
In order to solve the problems referred to above, it is simple that this utility model provides a kind of new structure, install with easy to adjust, maintenance frequency is few, its prestretched effect can eliminate screw mandrel because of the temperature rise elongation impact on precision, thus improving precision and the reliability of screw mandrel, it is ensured that the rigidity of screw mandrel and the technical scheme of heat stability:
A kind of screw mandrel prestretched structure, including mounting assembly, screw mandrel rear support assembly before motor, motor cabinet, shaft coupling, screw mandrel, screw mandrel, screw mandrel is horizontally installed to before screw mandrel between mounting assembly and screw mandrel rear support assembly, motor is horizontally installed on motor cabinet, motor output shaft is connected by shaft coupling with screw axis, and before screw mandrel, mounting assembly, screw mandrel rear support assembly are coaxially mounted on screw axis.
As preferably, screw mandrel rear support assembly includes adjusting pad, bearing block, spacer, bearing drive end bearing bracket, locking nut, bearing, middle inner spacing collar, middle outer separator, bearing rear end cap, adjusting pad is arranged between bearing block and bearing rear end cap, bearing is arranged on screw mandrel both sides, and two groups of bearings are arranged on middle inner spacing collar and middle outer separator both sides, bearing two ends are also equipped with spacer.
As preferably, in screw mandrel rear support assembly, screw mandrel end installation locking nut is locked, and bearing both sides are provided with bearing drive end bearing bracket and bearing rear end cap, and fixedly mount with bearing block.
As preferably, adjusting pad is made up of two pieces of semicircle adjusting pads, and is equipped with four screw mounting holes on every piece of semicircle adjusting pad.
The beneficial effects of the utility model are in that:
(1) this utility model simple in construction, spacer and bearing drive end bearing bracket is adopted to be fixed by bearing one end Internal and external cycle, the other end adopts bearing rear end cap to be fixed by bearing outer ring, bearing inner race adopts locking nut locking, reach pretension stretching action, make bearing internal external circle stress equalization, it is ensured that bearing service life, and when adjusting, have only to adjust the locking nut of side, simple and convenient；Pretension amount of tension is controlled by adjusting pad, makes screw mandrel amount of tension be able to quantified controlling, to adapt to the screw mandrel prestretched amount under different operating environment；Equipped with spacer between bearing, in order to adjust gap between bearing and precompressed.
(2) this utility model is installed with easy to adjust, and maintenance frequency is few, and its prestretched effect can eliminate screw mandrel because of the temperature rise elongation impact on precision, thus improving precision and the reliability of screw mandrel, it is ensured that the rigidity of screw mandrel and heat stability.
Accompanying drawing illustrates:
Fig. 1 is overall structure figure of the present utility model；
Fig. 2 is screw mandrel rear support assembly assumption diagram of the present utility model；
Fig. 3 is adjusting pad structure chart of the present utility model.
Detailed description of the invention:
For making utility model purpose of the present utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
As shown in Figure 1-Figure 3, a kind of screw mandrel prestretched structure, including mounting assembly 4, screw mandrel rear support assembly 6 before motor 1, motor cabinet 2, shaft coupling 3, screw mandrel 5, screw mandrel, described screw mandrel 5 is horizontally installed to before described screw mandrel between mounting assembly 4 and described screw mandrel rear support assembly 6, described motor 1 is horizontally installed on described motor cabinet 2, motor 1 output shaft is connected by described shaft coupling 3 with screw axis, and before described screw mandrel, mounting assembly 4, described screw mandrel rear support assembly 6 are coaxially mounted on screw axis.
nullIn the present embodiment，Screw mandrel rear support assembly 6 includes adjusting pad 601、Bearing block 602、Spacer 604、Bearing drive end bearing bracket 609、Locking nut 606、Bearing 607、Middle inner spacing collar 608、Middle outer separator 603、Bearing rear end cap 605，Described adjusting pad 601 is arranged between described bearing block 602 and described bearing rear end cap 605，And fixedly mounted by the installation nut on bearing drive end bearing bracket 609 and bearing block 602，Prestretched amount need to be used according to actual screw mandrel 5，Select the adjusting pad 601 of different-thickness，The quantification realizing screw mandrel prestretched controls，Described bearing 607 is arranged on described screw mandrel 5 both sides，And two groups of bearings are arranged on described middle inner spacing collar 608 and described middle outer separator 603 both sides，Bearing 607 two ends are also equipped with described spacer 604，In screw mandrel rear support assembly 6, screw mandrel 5 end installation locking nut 606 is locked，Bearing 607 both sides are provided with described bearing drive end bearing bracket 609 and described bearing rear end cap 605，And fixedly mount with bearing block 602.
It addition, in the present embodiment, adjusting pad 601 is made up of two pieces of semicircle adjusting pads, and being equipped with four screw mounting holes on every piece of semicircle adjusting pad, it is solid and reliable；In actually used process, use the adjusting pad 601 of different-thickness, thus realizing screw mandrel amount of tension fixing quantity.
Assembly method of the present utility model is: bearing drive end bearing bracket 609, spacer 604, bearing 607, middle inner spacing collar 608, middle outer separator 603 are sleeved on successively on screw mandrel 5；The above-mentioned screw mandrel 5 installed is slided together and is inserted in bearing block 602, adjust the geometric accuracy of screw mandrel 5；Adjusting pad 601 is sleeved between bearing drive end bearing bracket 609 and bearing block 602, and with screw, bearing drive end bearing bracket 609 is fixed on bearing block 602 together with adjusting pad 601, and tighten；Spacer 604 is sleeved on screw mandrel 5, installs bearing rear end cap 605；Locking nut loaded screw mandrel and tightens, then tightening bearing rear end cap 605.
The beneficial effects of the utility model are in that: this utility model simple in construction, spacer and bearing drive end bearing bracket is adopted to be fixed by bearing one end Internal and external cycle, the other end adopts bearing rear end cap to be fixed by bearing outer ring, bearing inner race adopts locking nut locking, reach pretension stretching action, make bearing internal external circle stress equalization, it is ensured that bearing service life, and when adjusting, have only to adjust the locking nut of side, simple and convenient；Pretension amount of tension is controlled by adjusting pad, makes screw mandrel amount of tension be able to quantified controlling, to adapt to the screw mandrel prestretched amount under different operating environment；Equipped with spacer between bearing, in order to adjust gap between bearing and precompressed；This utility model is installed with easy to adjust, and maintenance frequency is few, and its prestretched effect can eliminate screw mandrel because of the temperature rise elongation impact on precision, thus improving precision and the reliability of screw mandrel, it is ensured that the rigidity of screw mandrel and heat stability.
Above-described embodiment is preferred embodiment of the present utility model; it it is not the restriction to technical solutions of the utility model; as long as without the technical scheme that creative work can realize on the basis of above-described embodiment, be regarded as falling within the scope of the rights protection of this utility model patent.
Claims (4)
1. a screw mandrel prestretched structure, it is characterized in that: include motor (1), motor cabinet (2), shaft coupling (3), screw mandrel (5), mounting assembly (4) before screw mandrel, screw mandrel rear support assembly (6), described screw mandrel (5) is horizontally installed to before described screw mandrel between mounting assembly (4) and described screw mandrel rear support assembly (6), described motor (1) is horizontally installed on described motor cabinet (2), motor (1) output shaft is connected by described shaft coupling (3) with screw axis, mounting assembly (4) before described screw mandrel, described screw mandrel rear support assembly (6) is coaxially mounted on screw axis.
2. a kind of screw mandrel prestretched structure according to claim 1, it is characterized in that: described screw mandrel rear support assembly (6) includes adjusting pad (601), bearing block (602), spacer (604), bearing drive end bearing bracket (609), locking nut (606), bearing (607), middle inner spacing collar (608), middle outer separator (603), bearing rear end cap (605), described adjusting pad (601) is arranged between described bearing block (602) and described bearing rear end cap (605), described bearing (607) is arranged on described screw mandrel (5) both sides, and two groups of bearings are arranged on described middle inner spacing collar (608) and described middle outer separator (603) both sides, bearing (607) two ends are also equipped with described spacer (604).
3. a kind of screw mandrel prestretched structure according to claim 2, it is characterized in that: in described screw mandrel rear support assembly (6), screw mandrel (5) end installation locking nut (606) is locked, bearing (607) both sides are provided with described bearing drive end bearing bracket (609) and described bearing rear end cap (605), and fixedly mount with bearing block (602).
4. a kind of screw mandrel prestretched structure according to claim 2, it is characterised in that: described adjusting pad (601) is made up of two pieces of semicircle adjusting pads, and is equipped with four screw mounting holes on every piece of semicircle adjusting pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620042322.7U CN205380496U (en) | 2016-01-18 | 2016-01-18 | Lead screw pre -stretching structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620042322.7U CN205380496U (en) | 2016-01-18 | 2016-01-18 | Lead screw pre -stretching structure |
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| Publication Number | Publication Date |
|---|---|
| CN205380496U true CN205380496U (en) | 2016-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620042322.7U Active CN205380496U (en) | 2016-01-18 | 2016-01-18 | Lead screw pre -stretching structure |
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| CN (1) | CN205380496U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105479237A (en) * | 2016-01-18 | 2016-04-13 | 南通国盛机电集团有限公司 | Lead screw prestretching structure |
| CN109403250A (en) * | 2018-10-29 | 2019-03-01 | 南京信息工程大学 | A kind of water-tight device for Telescopic guardrail |
| CN113560933A (en) * | 2021-07-22 | 2021-10-29 | 上海诺倬力机电科技有限公司 | Screw rod stretching support structure and mounting method thereof |
-
2016
- 2016-01-18 CN CN201620042322.7U patent/CN205380496U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105479237A (en) * | 2016-01-18 | 2016-04-13 | 南通国盛机电集团有限公司 | Lead screw prestretching structure |
| CN109403250A (en) * | 2018-10-29 | 2019-03-01 | 南京信息工程大学 | A kind of water-tight device for Telescopic guardrail |
| CN113560933A (en) * | 2021-07-22 | 2021-10-29 | 上海诺倬力机电科技有限公司 | Screw rod stretching support structure and mounting method thereof |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 226000 Jiangsu city of Nantong province Gangzha Yongtong Road Economic Development Zone No. 2 Patentee after: Nantong Guosheng Intelligent Technology Group Limited by Share Ltd Address before: 226000 Jiangsu city of Nantong province Gangzha Yongtong Road Economic Development Zone No. 2 Patentee before: Nantong Guosheng Electromechanical Group Co., Ltd. |